Typewriting machine



R. J, LEWIS 'urawamme mums Filed Dec. 29. 1925 WITNESSES ATTORN Y fillPatented June 14, 1927.

UNITED STATES PATENT OFFICE.

RICHARD J. LEWIS, OF MOHAWK, NEW.YOR K,.ASSIG NOR .T O REMINGTONTYPEWRITEB COMPANY, OF ILION, NEW YORK, A CORPORATION'OF NEW YORK.

TYPEWRITING' MACHINE.

Application filed December 29; 1925. Serial No. 78,546.

My invention relates'to braking devices for typewriting machines, andits object is to provide a new and improved braking contrivance which issimple in construction, easy to adjust and readily applicable toexisting styles of typewriting machines.

To the above and other ends Which will hereinafter appear, my invention"consists in the features of construction, combinations of devices andarrangements of parts hereinafter described and particularly pointed outin the claims.

In carrying out my invention in the present instance I provide a brakingdevice or arm which is engaged by the feed rack on the carriage when itis operated to release the carriage, as for tabulating, said braking armcoacting through the rack with the car riage to exert a braking effectthereon during the tabulating run. The braking arm is perforated to fitloosely andslidably on an u right "stationary rod or guide around wrich, below the arm, is coiled a wire spring on which the arm rests,providing a yielding cushion or support. Adjustable on the rod: abovethe'arm is a thumb nut whereby the amount of spring .pressure on the armmay be varied, said nut also serving as an abutment or pivot on whichthe arm may turn or swivel during the braking action. A guide cooperateswith'a slotin one end of the braking armto revent it from turning aboutthe rod an thus becoming displaced relatively to the rack.

My invention will be described in detail in connection with theaccompanying drawings wherein Fig. 1 is a fragmentary rear elevation,partly in section, of a typewriting machine to which my invention isshown as applied, only so much of the machine being illustrated as isnecessary to a full understandin of the invention.

Fig. 2 is a fragmentary plan View of the braking device together withits supportand' certain cooperating parts.

Fig. 3 is a vertical sectional view of the braking device and associateparts.

Fig, 4 is a view corresponding to Fig. 3 but omitting some of thepartsshown therein and illustrating the braking device in operativerelationship with the'feed rack or bar.

Fig. 5 is a detached perspective viewof the braking arm.

" I have shown the preferred form of my invention 'as applied to a No.12 Remington typewriting machine and in association with in'g, retardingor restraining action on the carriage or moving element. I

In the drawing, the main frame, as shown,

com-prises a base 1, posts 2' and a top plate 3. Fixed'above the topplate "are front and rear guide rails, the rear rail 4 beingshown, saidrails cooperating through anti-friction rollers 5, with the front andrear bars of a traveling platen carriage, only the rear bar 6 whereofappears in the drawings. Mounted on the carriage is a platen 7.Saidcarriage is constantly urged leftward along its track-ways by amotor or spring drum 8, which is mounted on the mainframe and isconnected'by a band or strap 9 with -the carriage. Pivoted at 10 tobrackets 11 on the carriage bar =6 is a supporting frame 12 to the upperbracket 16 to the under bracket or hanger 17 comprises at the right(viewed from the rear, as in Fig. 1) the usual counter-sunk headed screw18, whileat the left there is'employed a screw member or stud, indicatedasa whole by the numeral 19, this stud being of a special design,employed for the purposeso-f my invention as ereinafter explained. Asbest shown in Fig. 3, said stud 19 comprises a body portion 20, a lowerthreaded portion 21 and an upperthreaded portion 22 of smaller diameter.Between the body portion and the upper threaded end portion 22 thereintervenes a hexagonal head portion 23 whereby the stud may be readilyscrewed into and out of place. The lower threaded end 21 engages in atapped opening in the lower hanger 17, while the hexagonal head 23 andhr a cket the upper threaded portion 22 project above the upper surfaceof the left-hand portion of the bracket 16. The rear portion of theshaft 15supports an escapement wheel (not shown) which cooperates withthe usual escapement dogs to afford letter space feed movements of thecarriage and platen under the pull of the motor 8. By lifting orswinging up the feed rack 13 about the pivots 10 it may be disconnectedfrom the pinion 14 and the carriage and platen thereby freed foruninterrupted movements or runs leftward under the impulse of the motoror main spring.

l. have shown my invention associated with a tabulatiirc mechanisminvented by G. A. tileib and disclosed and claimed in his applicationSr. No. 29,874, filed May 13, 1925. Said tabulating mechanism comprisesa column-stop bar 2st, extendinglengthwise of the carriage at its rearand mounted on extensions .25 of the brackets 11 secured to the rear bar6 of the carriage. Adjustaliily mounted on the stop bar .24: are one ormore column stops 2G. Cooperative with. the column stopsilti is anotched tabulator stop 2'? which is slidably supported on the rearwardlybent car 28 of a bracket 29, having foot portions 80 which receivescrews 31 whereby said bracket is secured to the top plate 3. Thetabulator stop or frame-stop 27 is connected by rivets with an angularpiece 33 at the opposite side of the ear 28, the rivets passing througha slot-way in said ear and the construction being such that the stopmember coi'nprisin r the part 27 and the part 3?) is slidably sup'iorted on the ear for up and down movement into and out of the path ofthe do\inwardly projecting column stops. The laterally extending portionof the part 33 carries a stud or pin 341-, which rests on and issupported by the free end of a spring plate said plate haying: an ear 36which receives screws 37. whereby the spring plate is secured to therear face of a le er member 38, pivoted at 39 on the 232. The lever 38provided with a nose or extension 40 which overlies the stud -34. saidstud being thus confined between the spring; 35 and the nose 40. Alsothe ri jht-hand arm of the lever member is provided with a forwardextension 41. terminating in a rounded shoe or lifter 455 whichunderlies the rack or bar 13. The right hand end portion of the levermember 38 has adjustably secured to .it by screws 4-3 and 4.4- anextension to which is pivotally connected at l6 the upper end of anangular link or connector 47. the lower end whereof is pivotallyconnected at d8 to a tabulator lever 49, fulcrumed at the rear of themachine and terminating at the front in an upwardly extending stem towhich is secured a tabulator key 50. When said key is depressed, thelever l9 will swing down on its fulcrum, thus pulling down the link at?and the extension d5, thereby rockiin the lever member 38 on its fulcrum3%) and cansing the inner or righbhand arm thereof to swing upwardcarrying with it the spring plate or finger 35 and causing said lingeracting against the stud 34 to slide upward the tabulator stop 27 intothe path of the column stops. Also the shoe 4:2 concurrently actingagainst the under side of the rack 13 will swing the rack upward andrelease the carriage, which will run or move continuously leftward untilarrested by the engagement of the proximate column stop 26 with theprojected frame stop 9?. On releasing the tabulator key the tabuiatinggmechanism will be restored to normal position by means comprising avspring 51. so cured by a screw 52 to the bracket 29, the free end ofsaid spring overlying the extension ll and constantly tending to swingthe stop 27 and the lever 38 downward. It is: not deemed necessary morefully to describe the construction and operation of the tabulatingmechanism since it is not per se my invention, and is shown hereinElijan example of mechanisms with which my present invention may beadvantageously employed.

In order properly to regulate and control the runs or free movements ofthe carriage, I have provided a new and improved braking contrivancewhich is normally inert or inoperative and is rendered automaticallyeffective when the carriage is released for such uninterrupted runs, asby the labulat ing; mechanism above described.

My improved braking; mechanism coniprises an annular member or arm showndetached in Fig. 5 and designated as a whole by the numeral 53. Said armor member comprises a lmriziiintal body portion 54, having; at its reara. down ard ertension 55 terminating in an oil-set it formed with a.slot 57. At the front the body portion 54- has an extension :38 whichprojects upward at an angle to the body portion and terminates in aninclined end portion 59, to which is detachably secured, as by rivets(30, a. cont-a :t or plate (31 which overlies the upper end of the rackor bar 13 and is adapted to be engaged thereby. The body portion 54 isformed with :i perforation or hole 62 which its loosely over therod-like end portion 22 of the stud l!) which projects above the bracketlii. The slot 57 of the braking arm engages with a screw 63 whichprojects above the ijiracket l t; and is preferably the stop screwemployed with the usual. back spacing mechanism of the Remingtonmachine. The check nut 63 which holds the screw 63 in setpositions mayserve a stop for the off-set 56, thus limitingv moven'rents oi thebraking member 53 under actuation of the rack 13. The

till

braking arm 53 rests, on and "is supported by a yielding or cushiondevice in theforln of a coiled spring 64 which in turn is supported bythe head 23 of the member 19. Above the body portion 54 or at itsopposi't-e side from the spring 64L is a regulating device in the formoi a thumb nut 65 which is threaded on the rod 22 and at its under sideis formed with a boss 66against which the braking device is constantlypressed by the spring 64. The periphery of the nut 65 is preferablyknurled or roughened, so that it may be turned conveniently. The underface of the boss 66 is preferably .i-l-("OlQCl or formed with radialgrooves or depressions indicated at 67, these depressions being adaptedto cooperate with a projection '68 on the upper face of the body portion54 in order to hold the nut 65 in adjusted positions, the devices 67 and68 providing in effect a detent for the nut 65. The screw 63 serves as aguide to prevent the member 53 from turning about the rod 22 as a'pivot.The thumb nut 65 by being threadeddownward or upward on the rod 22 notonly serves to vary and regulate the tension of the cushion or springsupport 64 but also to vary the normal position of the braking arm 53and the distance of the contact 61 from the topof the rack 13. In otherwords, the nut or abutment 65 provides means for varying and regulatingthe action or effect of the braking contrivance.

In operation, with the parts related as shown in Figs. 1, 2 andespecially Fig. 3, on depression of the tabulator key 50 the frame stop27 is projected upward and the rack 1.3 is lifted by the shoe42,.thereby releasing the carriage. As the rack swings upward itcontacts with the contact device 61 and acts therethrough on the brakingmember or arm 53, swinging said member to the position shown in Fig. 4,member swinging or turning on the thumb nut 65 as a fulcrum. As thebraking arm is thus moved by the rack the spring 64' will be depressed,reacting on the contact end of the brake 53 and through it on the rack13 and the carriage ,on which it is supported, thus braking or retardingthe carriage and preventing it from causing a too violent coactionbetween the tabulator stops. The extent of the braking action may, ofcourse, be conveniently regulated by adjusting the thumb nut 65, thebraking effect being increased by screwing down the nut and compressingthe spring 64, and correspondingly decreased by unscrewing the nut orturning it to move upward on the threaded rod or screw 22. After thecarriage has been. arrested .by the coacting tabulator stops 27 and 26,the .key -50 may be released, permitting the tabulator mechanism and therack 13 to return to normal position. As the rack or said movable bar 13swings downward fromthe Fig. at to the Fig. 3 positioln the brakingmcmbcr53 will follow It, said member being restored to normal positionby the action of the spring 6 L. It-Jwill be observed 1. Brakingmechanism for the carriage of a typewriting machine, comprising a braking arm adapted to cooperate with the carriage, anda cushioning deviceon whichsaid arm is adapted to swing so that its opposite end portionsare alternately raised andlowered. V J

2. Braking mechanism for the carriage of a typewriting machine,comprising a braking arm adapted to cooperate with thecar"- riage, and acushioning device on which said arm is adapted to swing so that itsopposite end portions are alternately raised and lowered, said devicealso restoring said arm to normal position after operation. C V

3. Braking mechanisnifor the carriage of a typewriting machine,comprising a braking arm eti'ective on the carriage when it isreleased,and a spring support forsaid arm mounted on a stationary part of the*machine, said braking arm being adapted to swing on said spring supportso that the op posite end portions of said arm are adapted to bealternately raised and lowered.

4. Braking mechanism for the carriage of a typewriting machine,comprising a braking device effective on the carriage when it isreleased, a coiled spring on which said device is supported, and meansfor maintaining said device on its support, said braking device beingadapted to swing on said spring so that the opposite end portions ofsaid device are adapted to be alternately raised and lowered.

5. Braking mechanism for the carriage of a typewriting machine,comprising a braking arm effective on, the carriage when it is said armis supported, and a device on which said arm is adapted to pivot when itbecomes operative.

7. Braking mechanism for the carriage of a typewriting machine,comprising a brake that is effective on the carriage when it is l'ilfireleased, spring means on which said brake is supported, and a device onwhich said brake is adapted to pivot when it becomes operative, saiddevice being adjustable to vary the action of said brake.

8. Braking mechanism for the carriage of a typewriting machine,comprising a device rendered effective as a brake on said car riage whenit is released, a coiled spring by which said device is supported and aseparate abutment against which said device is maintained by saidspring, said abutment serving as a pivot for said device.

9. Braking mechanism for the carriage of a typewriting machine,comprising a braking arm adapted to cooperate with the riage, a coiledspring by which said arm is supported, and an abutment against whichsaid arm is pressed constantly by said spring, said arm pivoting on saidabutment when the carriage is released, said abutment being adjustableto vary the client of said arm.

10. In a typewriting machine the combination oi a traveling carriage, abraking member therefor, a rod on which said memher is loosely mountedbetween its ends, a spring coiled around said rod and serving both as asupport and a restoring means for said member, means for preventingdisplacement of said member from said rod, and a stationary guide forpreventing turning movements of said member about said rod as a pivot.

11. In a typewriting machine the combination of a traveling carriage, abraking arm, a rod on which said arm loosely lits, a wire spring coiledaround said rod and pro viding a cushion for said arm, means forcompressingsaid spring and preventing displacement of said arm axiallyof said rod, and a stationary guide cooperative with one end portion ofsaid arm to prevent it from turning about said rod as a center, theother end portion of said arm acting on the carriage.

12. In a typewriiing machine, the combination of a raveling carriage, anarm eitectire as a brake thereon, an upright rod over which said armloosely fits, a wire spring coiled around said rod beneath said arm and.providing a yielding support llmretor, an adjustdale tlnnnb nut threadedon said rod above said arm, said nut serving' as a pivot for said rodduring its braking action, and a stationary guide for preventing saidarm from turning about said rod as a center.

13. In a typewriting machine, the combination of a traveling platencarriage, a releasable feed rack thereon, a cooperating feed pinion, abraking arm, a yielding support for ,said arm, an upright rod on whichsaid arm loosely fits, means for preventing said arm from turning aboutsaid red as a pivot, an abutment with which said arm constantly engages,a tabulator key, and connections controlled by said key eil'ective torelease said rack and cause it to coaet with said braking arm.

1a. In a typewrlting machine the combination of a traveling carriage, abraking device therefor, a rod along which said device is slidable, astationary guide, one portion of said device enacting with the carriageand another portion with said stationary guide, a spring coiled on saidrod and supporting said device, and an adjusting nut threaded on saidrod at the opposite side of said device from said. spring, said nutserving as a pivot for said arm and being operative to vary the locationof said arm and the pressure of said spring thereagainst. 15. In atypewriting machine, the com bination oi? a traveling platen carriage, areleasable teed rack on said carriage, a cooperating teed pinion. columnstops on said carriage, a cooperating tabulator stop on the frame ot themachine, a tabulator key con nected to said frame stop, a rack-liftingdevice operative by said key, an angular braking arm, an upright rod,said braking arm being perforated to fit loosely on said rod, a springcoiled on said rod on which said braking arm rests, a nut on said rodagainst which said arm is pressed by said spring, a guide for preventingsaid arm from turning on said rod as an axis, said rack when released bysaid tabulator key coacting with said arm which is caused thereby toturn on said nut as a pivot and exert a retard ing effect on said rackand through it on the carriage. 16. In a typewriting nmchinc, thecombination of a traveling carriage, a releasable feed rack thereon, acooperating r'eed pinion, a braking arm, a detachable contact on saidarm, a guide rod for said arm, a yielding support for said arm, anabutment with which saidarm is in constant engagement, a tabulator key,and connections controlled by said key that are effective to releasesaid rack and cause it to operatively engage with said contact, saidbraking arm pivoted on said abutment during the braking operation.

17. In a typewriting machine, the combination ol. a traveling carriage,a movable bar thereon, a cooperating ii'eed pinion, a braking arm, adetachable contact on said. arm, a yielding support for said arm, aguide rod for said arm, a thumb nut on said rod with which said armengages, the en gaging face of said nut being provided with radialdepressions and said arm with a cooperative projection, a key, andconnections controlled thereby to move said bar and cause it to coactoperatively with said contact during carriage travel.

18. Braking mechanism for the carriage of a typewriting machine,comprising a braking arm that is effective on the carriage whenreleased, spring means on which said arm is supported, and a device onwhich said I arm is adaptedto pivot during the braking operation, saiddevice being adjustable to vary the normal position of said braking arm.

19. Braking mechanism for the carriage of a typewritmg machine,comprising a braking arm that is effective on the carriage whenreleased, spring means on which said arm issupported, and a separatepart against which said arm is constantly pressed by said spring, saidpart being adjustable to vary the normal position of said arm and alsoto alter the tensionof said spring.

20. In a typewriting machine, the combination of a traveling carriage, akey-controlled bar movably mounted on the carriage, a co-acting brakingarm overlying said bar 20 but normally separated therefrom, and asupport for said braking arm, said support being adjustable to vary thenormal relationship between the coacting arm and bar.

21. The combination with a carriage havin a liftable feed rack, of abrake arm overlying said liftable rack, and a spring against which saidarm acts when the rack is lifted.

22. The combination with a carriage having a liftable feed rack, of arocking brake arm, one portion of which overlies said rack, a springunderlying another portion of said brake arm and on which the said armis directly supported, and a stop limiting the upward movement of saidbrake arm by the pressure of said spring whenthe rack is in normalunlifted position.

Signed at Ilion, in the county of Herkimer, and State of New York this23rd day of December, A. D. 1925.

RICHARD J. LEWIS.

